After my chef’s knife, it’s the tool I reach for most often. If you are unfamiliar with a flat-bottomed whisk, imagine a coil bent into a circle and attached to a handle at a slight angle.

[Drew Pilcher] needed durable, custom-wound coils with no core, and perfectly flat sides. Coils can be wound by hand, of course, but reliably creating perfect coils with thin wire and lots of ...